88638637 has 2 divisors, whose sum is σ = 88638638. Its totient is φ = 88638636.

The previous prime is 88638623. The next prime is 88638659. The reversal of 88638637 is 73683688.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56160036 + 32478601 = 7494^2 + 5699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88638637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88633637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44319318 + 44319319.

It is an arithmetic number, because the mean of its divisors is an integer number (44319319).

Almost surely, 2^88638637 is an apocalyptic number.

It is an amenable number.

88638637 is a deficient number, since it is larger than the sum of its proper divisors (1).

88638637 is an equidigital number, since it uses as much as digits as its factorization.

88638637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 88638637 is about 9414.8094510723. The cubic root of 88638637 is about 445.8694225849.

The spelling of 88638637 in words is "eighty-eight million, six hundred thirty-eight thousand, six hundred thirty-seven".